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Finding the Fourth Proportional to 98,136.88, 135,469.52 and 66,348.88

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Solution

The fourth proportional to 98,136.88, 135,469.52 and 66,348.88 is: 91,588.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,136.88 : 135,469.52 = 66,348.88 : x
  2. Step 2: Convert to fraction form
    98,136.88/135,469.52 = 66,348.88/x
  3. Step 3: Cross multiply
    98,136.88x = 135,469.52 × 66,348.88
  4. Step 4: Simplify right side
    98,136.88x = 8,988,250,926.14
  5. Step 5: Solve for x
    x = 8,988,250,926.14/98,136.88
  6. Step 6: Final answer
    x = 91,588.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.